to the fact that the left engine thrust was adding significant forward thrust, at a 60% level. The thrust reverse doors eventually failed to unlock and the reverse thrust of the right engine stayed on its idle forward thrust position. The action of First Officer Chernykh was, therefore, rendered useless. Captain Shibanov then tried to slow down the aircraft by stepping on the brakes with full force. He managed to stabilize the speed, but the aircraft kept moving forward. Simultaneously with the pilots' attempt to slow down the aircraft, the forward thrust from the left engine created another problem as well. As the left engine was producing significant forward thrust and the right engine was at its idle position, this created a thrust asymmetry. The thrust from the left then caused the aircraft to start drifting towards the right. The pilots then tried to make the aircraft to stay on the runway and so they pressed the left rudder pedal. The aircraft then drifted towards the left. However, the pilots had pressed the pedal in excessive force and thus the aircraft started to drift excessively as well towards the left. To counter it, the crew made a small right rudder input. Despite the small input, the aircraft drastically turned towards the right. This took the crew by surprise and they tried hard to counter it by pressing the left rudder pedal again in full force. The aircraft, however, didn't budge much. The aircraft eventually veered off the runway. Captain Shibanov then shouted at First Officer Chernykh to shut down the engines. His order, however, fell on deaf ears as his First Officer didn't shut down the engines. Subsequently, as the engines weren't shut down, the left engine kept providing forward thrust. The aircraft didn't slow down and crashed. Accidental thrust Based on the recorded parameter of the FDR, it was evident that the thrust lever of the left engine had been accidentally moved by the crew, most likely by Captain Shibanov as the pilot flying. The unintentional movement concurrently happened with the decrease of the right engine reverser thrust. Captain Shibanov was seated on the left as he was the pilot flying for the flight. The throttle lever of the right engine reverse thrust was located at the right. To reach said lever, he needed to cross the left engine lever first. While moving the right engine reverse thrust lever,